Dear Doug

I'm looking for making the interhemispheric registration procedure of FS, I was just gertting familiar with it by reading the:
http://surfer.nmr.mgh.harvard.edu/fswiki/Xhemi
I found that in the step "# Correct for MC" say that this need a new version of mri_glmfit-sim, is this version somehow available now? or it does refeer to the FS v5.1 version?

I have two doubs about the whole procedure:
which are the main differences between using the FS average and creating my own average?
and second: if I decide to create my own atlas, after all the 1.3 procedure, should I then run the 1.2 steps subtituing the FSaverage_sym for mine?

Many thanks in advanced,
Gabriel